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    <a href="../index.html">cppreference.com</a> &gt; <a href=
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    getenv
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    Syntax:
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  <pre class="syntax-box">
  #include &lt;stdlib.h&gt;
  char *getenv( const char *name );
</pre>

  <p>The function getenv() returns environmental information associated
  with <em>name</em>, and is very implementation dependent.
  <strong>NULL</strong> is returned if no information about
  <em>name</em> is available.</p>

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